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Water is lifted out of a well 22.0m deep by a motor rated at 1.40hp .Assuming efficiency 90% , how many kilograms of water can be lifted in 1 min?
A 2.5-kg block is attached to a spring with k=100 N/m and compress it with a distance of 0.40 m. What is the mechanical energy of the block
Two sound speakers separated by a distance of 3-meters, are driven in phase by same audio amplifier. A listener sits directly in front of one speaker at a distance of 4 meters from it so that listener and speakers form a right triangle.
If the density and atomic mass of copper are respectively 8.80 103 kg/m3 and 63.5 kg/kmol, Determine the drift speed of the electrons in a 10 gauge copper wire (2.588 mm in diameter) carrying a 19.5 A current
A system gains 3400 J of heat at a constant pressure of 1.36 × 105 Pa, What is the change in the volume of the system
A soft iron bar is sitsting surrounded by two separate loops of wire. The loop on the left, L1, initially has a current flowing clockwise as viewed from the right, What will be direction of magnetic field in soft iron bar
On December 3, 2011, Jason sold th ebonds for $383,000 after amortizing $1,000 of the original issue discount. Illustrate what are the nature and amount of Jason's gain or loss?
At Zion National Park a loud shout produces the echo 3.40 s later from a colourful sandstone cliff. How far away is the cliff.
A cylindrical bucket, open at the top, is 29.0cm high and 12.0cm in diameter. How High will the water in the bucket rise
Looking out the window of a train you observe the passengers on a second train moving in the opposite direction at a constant velocity. determines which of the two trains is actually moving
Current passes through a solution of sodium chloride. in 1.00 secnds, 2.68 x 10^16 Na+ ions arrive at the negative electrode, what is the current in the fluid
Radioactive isotopes frequently occur together in mixtures. Assume a 400g sample contains, with a half-life of 12 days, and, with a half-life of 4.5 days. If there are firstly twice as many calcium atoms as there are barium atoms, what will be the ra..
when jim abd rob ride bicycles, jim can only accelerate at three quarters the acceleration of Rob. Both start from rest at the bottom of a long straight road with constant upward slope. If rob takes 5.7 minutes to react the top, how much earlier s..
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